Calvin R. Howell

Professor of Physics

Office Location: 
221 Dfell, Durham, NC 27708
Front Office Address: 
Box 90308, Durham, NC 27708-0308
Phone: 
(919) 660-2632

Overview

Professor Howell is the Director of the Triangle Universities Nuclear Laboratory (TUNL). His research interests are the quantum chromodynamics (QCD) description of structure and reactions of few-nucleon systems, Big Bang and explosive nucleosynthesis, and applications of nuclear physics in biology, medicine and national security. His research includes: studies of few-nucleon reaction dynamics, measurements of the neutron-neutron scattering length, photodisintegration of the deuteron and beryllium at energies relevant to astrophysics processes, and studies of the carbon and nitrogen accumulation and translocation in plants using short-lived radioactive isotopes and positron emission tomography.

Education & Training

  • Ph.D., Duke University 1984

Selected Grants

Support for the 17th International IUPAP Conference on Few-Body Physics awarded by National Science Foundation (Principal Investigator). 2003 to 2004

NIST Summer Undergraduate Research Fellowship Program awarded by National Institute of Standards and Technology (Principal Investigator). 2004

Pages

Fonvieille, H, Laveissière, G, Degrande, N, Jaminion, S, Jutier, C, Todor, L, Salvo, RD, Hoorebeke, LV, Alexa, LC, Anderson, BD, Aniol, KA, Arundell, K, Audit, G, Auerbach, L, Baker, FT, Baylac, M, Berthot, J, Bertin, PY, Bertozzi, W, Bimbot, L, Boeglin, WU, Brash, EJ, Breton, V, Breuer, H, Burtin, E, Calarco, JR, Cardman, LS, Cavata, C, Chang, C-C, Chen, J-P, Chudakov, E, Cisbani, E, Dale, DS, Jager, CWD, Leo, RD, Deur, A, D'Hose, N, Dodge, GE, Domingo, JJ, Elouadrhiri, L, and Epstein, MB et al. "Virtual Compton scattering and the generalized polarizabilities of the proton at Q2=0.92 and 1.76 GeV2." Physical Review C - Nuclear Physics 86.1 (2012). Full Text

Arnold, CW, Clegg, TB, Iliadis, C, Karwowski, HJ, Rich, GC, Tompkins, JR, and Howell, CR. "Cross-section measurement of 9Be(γ,n)8Be and implications for α+α+n→9Be in the r process." Physical Review C - Nuclear Physics 85.4 (2012). Full Text

Couture, AH, Clegg, TB, Tajima, S, Howell, CR, Fallin, B, Esterline, JH, Crowell, AS, Crowe, BJ, Markoff, DM, Cumberbatch, LC, Pedroni, RS, and Witała, H. "Cross-section measurements of 2H(n,np)n in symmetric star configurations." Physical Review C - Nuclear Physics 85.5 (2012). Full Text

Hammond, SL, Adekola, AS, Angell, CT, Karwowski, HJ, Kwan, E, Rusev, G, Tonchev, AP, Tornow, W, Howell, CR, and Kelley, JH. "Dipole response of 238U to polarized photons below the neutron separation energy." Physical Review C - Nuclear Physics 85.4 (2012). Full Text

Weisenberger, AG, Kross, B, Lee, S, McKisson, J, McKisson, JE, Xi, W, Zorn, C, Reid, CD, Howell, CR, Crowell, AS, Cumberbatch, L, Fallin, B, Stolin, A, and Smith, MF. "PhytoBeta imager: A positron imager for plant biology." Physics in Medicine and Biology 57.13 (2012): 4195-4210. Full Text

Raut, R, Crowell, AS, Fallin, B, Howell, CR, Huibregtse, C, Kelley, JH, Kawano, T, Kwan, E, Rusev, G, Tonchev, AP, Tornow, W, Vieira, DJ, and Wilhelmy, JB. "Cross-section measurements of neutron-induced reactions on GaAs using monoenergetic beams from 7.5 to 15 MeV." Physical Review C - Nuclear Physics 83.4 (2011). Full Text

Adekola, AS, Angell, CT, Hammond, SL, Hill, A, Howell, CR, Karwowski, HJ, Kelley, JH, and Kwan, E. "Discovery of low-lying E1 and M1 strengths in Th232." Physical Review C - Nuclear Physics 83.3 (2011). Full Text

Kwan, E, Rusev, G, Adekola, AS, Dönau, F, Hammond, SL, Howell, CR, Karwowski, HJ, Kelley, JH, Pedroni, RS, Raut, R, Tonchev, AP, and Tornow, W. "Discrete deexcitations in U235 below 3 MeV from nuclear resonance fluorescence." Physical Review C - Nuclear Physics 83.4 (2011). Full Text

Arnold, CW, Clegg, TB, Karwowski, HJ, Rich, GC, Tompkins, JR, and Howell, CR. "Characterization of an INVS model IV neutron counter for high precision (γ,n) cross-section measurements." Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 647.1 (2011): 55-62. Full Text

Mueller, JM, Charity, RJ, Shane, R, Sobotka, LG, Waldecker, SJ, Dickhoff, WH, Crowell, AS, Esterline, JH, Fallin, B, Howell, CR, Westerfeldt, C, Youngs, M, Crowe, BJ, and Pedroni, RS. "Asymmetry dependence of nucleon correlations in spherical nuclei extracted from a dispersive-optical-model analysis." Physical Review C - Nuclear Physics 83.6 (2011). Full Text

Pages